Home / 315,089.20-472,704.30-115,405.60

Finding the Fourth Proportional to 315,089.20, 472,704.30 and 115,405.60

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Solution

The fourth proportional to 315,089.20, 472,704.30 and 115,405.60 is: 173,134.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,089.20 : 472,704.30 = 115,405.60 : x
  2. Step 2: Convert to fraction form
    315,089.20/472,704.30 = 115,405.60/x
  3. Step 3: Cross multiply
    315,089.20x = 472,704.30 × 115,405.60
  4. Step 4: Simplify right side
    315,089.20x = 54,552,723,364.08
  5. Step 5: Solve for x
    x = 54,552,723,364.08/315,089.20
  6. Step 6: Final answer
    x = 173,134.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.